Joseph w



J. W. CALBP.

Wrench.

No. 226.490. Patented April 13,1880.

UNITED STATES PATENT OFFICE.

JOSEPH CALEF, Ol NORTH EAS'IOX, MASS., ASSIGNOR OF ONE-HALF OF VlllSiltll'l TO AUSTIN DEMMONS CABLE, OF MONTREAL, CANADA.

WRENCH.

SPECIFICATION forming part of Letters Application tiled To It -zr/iomvit may concern:

le ir. known ttiathJosrau WARREN Gamen, ot'North Easton, in the countyot' `lristol and State ot' Massachusetts, have invented certain new andusetul improvements in \\'renehes; and l do hereby declare thatthetbllowingis a t'nll, clear, and exact description ot` the invention,which will enable others skilled in the art to which it appertaius tomake and use the 1o same, ret'erenee being had to the accompanyim.;drawings, which t'orm a part ot' this specilication, and in which-Figure l is a side viewot'awreneh embodying; my improvement. Fig. 2 isau edge view i5 ot' the same. Fig'. 3 is a section through Fig. L. Fie'.-t is a section through Fig. 1. Fig. 5 is a perspective view 'ot' thesliding jaw detached.

SimilarI letters oi' reference indicate correzo spondingparts in all thetigures.

This invention has relation to self-adjustine,I wrenches; and itconsists in the construction and combination ot' parts, as hereinaftert'uliy described, and particularly pointed out in the 5 claim.

ln the drawings, A is the stem or shank, which is inserted into awoede-u handle, 12, and s ecured by a nut, b,`at its lower end. Theprojecting' upper part. ot' the sha-uli, above 3o its cylindrical headA', is tint-tened, as shown at JQ, and provided with two diverging lugsor ears, n. n, and a perforation, c. The outer jaw consists ot' twoplates or parts, O O, united on one side by the solid -jaw-piece l),which provided with a lat'erally-proiecting' tlange, d. The oppositeinside t'aces ot' the janv-plates O O have parallel grooves c e andperlen-ations ff, which register with the aperture c in the upper partot' the, shank, and the jaw, consist- 40 ing ot' the parts C t) I), ispivoted upouthe tlattened head A2 by means ot a pin, E. The adjustablesliding jaw consists ot' a sliding;` bolt, i?, which is provided withtwo parallel tlanfg'es, `1/ y, one ou cach side, which tit into thegrooves c o ot' the jaw pla-tes or blades O O. The under side ot' bolt Fhas two notches or recesses, h. i, which receive the ears lla ot' thetlattened head A2, as shown in Fig. 3, and .its upper side is providedon one end with the 5o jaw-piece G, which is made with a tlange, d,

Patent No. 226,490, dated April 13, 1880.

January 31, 12F-:0.

in like manner as jaw l), the tlanges d I being opposite to andregisterinjr with each other.

Thejaws or lugs d d are set back t'rom the tace ot` thejaws l) (i, sothat there may belct't;

a projecting portion ol' said iaws l) (i, to op- 55 crate as a stop forthe nut. or whatever is grasped byjaws or lugs d d.

l. preter to make the laces ot' the jaws D G partly serrated, to enablethem to get a better bite on the lint operated upon, and partly 6osmooth, so as to avoid the abrasion ot' painted or otherwise finishedsurt'aees, il.' the wrench is used on such.

From the ioregoing deseription, taken in connection with the drawings,the operation ol.l my invention will readily be understood without;further explanation. By simply turning the handle the liaws will adjustthemselves upon the nut or pipe, as the 'ase may he.

Instead ot' two lugs or eogs, da., as shown 7o in the drawings,allargernumber may be used, the holt;1`bein; il made with a correspondingnumber of recesses; bntt'or ordinary purposes` two will be t'onud to besullieient. It' more thantwo are used, they should he disposed in asegment erhalt-circle around piu E as a center, so as to operate withease. Y

The I'iroieeting tlan ges d d enable the wrench to be used on carriageand other work where thejaws D G could not well he applied. 8o

Having thus described my invention, I cla-im and desire to secure byLetters Patent: ot' the United States- The wrench composed ol' thehandle A, with its outer end provided with teeth a (L ot' jaw 85 D,having on each side otl the teeth side pieces, O,havingop1iositeparallel grooves c, and having a lateral tlauge, d, and slidingrack-jaw' F (i, having tlanges r/ and a lateral tiange, d, the tianges dd being set haelt from the face 9o ot" the jaws D G, as and for thepurpose set: forth.

, 1n testimony that I elaim the ,loregoing as my own I have heretoatixed my signature in' presence of. two witnesses.

JOSEPH WARREN UALEF. Vitnesses:

J. Bnosson, J B. OSTELL.

